mccloskey



(No Model.)

2 Sheets-Sheet MOCLOSKEY.

EXPANSION DEVIGE.

Patented Feb. 26, 1889.

, El |j Qmwnlllnrnlu N. PETERS, PlmwLillognpher, Washinglmv4 nA t:4

2 Sheets-Sheet. 2.

` (No Model.)

J. MGCLOSKEY.

A EXPANSION DEVISE. No. 398,526. Patented Feb. 26, 1889.

fgfi l i FVA.- WHNEEEEEL NEN-PEPE; Mmm. mn/... ZM MQ, www OQ Y of a series of reverse C curves or springs, as

thlzrrrnn STATES Parleur Ormea..

JOI-IN MCOLOSKEY, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO CHARLES F. FARVELL, OF SAME PLACE.

EXPANSION DEVICE.

SFECIFICATION forming part of Letters Patent No. 398,526, dated February 26, 1889. Application filed August 25, 1888. Serial No. 283,701. (No model.)

To all whom it may concern: l

Be it known that I, JOHN MCCLOSKEY, et Boston, in the county of Sultolk and State of i Massachusetts, have invented a new and Improved Expansion Device, ot' which the vtollowing is a specilication.

My invent-ion consists oll a tube somewhat flattened and bent or termed into the shape below described. This may be used in. vari* ous connections where it is desired to convert force or pressure into motion. For example, it maybe filled with any et' the hydra carbons-sueh as rhigoline, naphtha, gasoline, dmc., any oit' which are highly expansible by application of heat-and after having been sealed tightly, in any manner desired, will elongate from the expansive pressure generated within said tube upon the application oi' h-at I"his, itis enabled to do by the shape of said ccnvolutions or reverse C curves in said tube. Upon the removal of the torce or pressure the spring or power ot the material of which the tube is `made may cause said tube to return or contract to its original length, thus converting force into reciprocate ing motion. or said tube may be made to return to its original length by means of a counter pressure acting upon the outside thereof.

Heat may be applied to the device in any desired manner, such as in the shape of a naked iiame or by radiation, steam, elec tricit-y. het air, dac.

In vthe accompanying drawings, in which similar letters of reference indicate like parts, Figure l represents a longitudinal section ot' a steam-regulator valve provided with my device. Fig. 2 is a cross-section of the same on line fr, Fig. l. Fig. 3 is a longitudinal section of my device applied to a steam-tight joint. Fig. 4 is a longitudinal section of the device placed on the end of a pipe.

In Figs. l and 2, A is the casing. B is the inlet-tube; C, the outlet-tube; D, the regulating-screw turned by the hand-wheel D', E, the stuffing-box, and F the valve upon the valve-seat, all constructed as usual and making no part of the invention. His a flattened be. icrmed into a series of exactly reverse i., curves or springs. This tube is to be filled i prevented.

with anydesirable liquid, )reference being' given, of course, to those that are highly ete pansible by the application ol heat. The tube is provided with one or more inlets for the admission of the liquid, said inlets being preferably near the ends et said tube, and being provided with suitable sealing-stoppers, as 71., whereby any possibility of leakage is Any well known liquid -tight 6o sealing device may be employed in place of the simple stopper shown in the lrawings- New by applying heat to this tube in any manner,whether in the forni of steam, electricity, or other substance, the tube will eX- pand by the pressure or stretching ot" the C curves or springs in exactly a longitudinal line-that is, a line which in the drawings is central and longitudinal with the casingA so that if the valve F, which is secured to the 7o lower end ot the tube, were raised from its seatand steam let in through the port B the tube, whose upper end is secured tothe lower end of the regulatingscrew D, would expand or elongate and force the valve down upon 7 5 its seat, while as the temperature within the tube lowered it would contract and the valve be lifted from its seat, letting in more steam.

In Fig. 3, I and J are steam-pipes, and l K the collar forming the joint out into two parts 8o to allow the aliplication ot' my tube H. In this case the tube is open at both ends to allow the passage otl the steam, and is practically an expansion-joint, the movement whereby the tube is elongated and contracted being derived from the contraction and elongation ot the pipes I J'.

In Fig. 3 the tube is secured to the end ot a pipe, Land is closed at its free or outer end. Elongation of the tube H by the appli- 9o cation of hcatmsay to the contents of the pipe L-produces motion at the free closed end of said tube H.

I do not claim as new a tube bent into a series of curves merely. The curves shown in my tube are C-shaped and reversemi, c., each bend or curve is oi' the shape of an arc of a circle greater than a halt-circle, (which is what I intend to convey by C-shaped,) and in each bend are portions of two other arcs roo reversed, which when completed forni the greater part of the next bends or convolu! tions. By this means, and because in each convolution there are no straight portions, but only true arcs, each more than half a circle, the expansion or lengthening of the tube is not only greatlyincreased, but the bending and strain of the convolutions are distributed as the tube is lcngthenel by the application of heat.

There are many positions and places in which my peculiarly-shapedtube maybe put; but wherever the device is placed, and in whatever manner force is applied, the saine result is obtained-viz., longitudinal expansion or straightening of the tube, whereby the ends are forced away from each other on a line drawn longitudinally through the series of C-shaped curves or springs and intersecting each.

Any desirable material, whether metallic or otherwise, maybe used in the construction of the tube.

I am aware that a tubular C-spring is not g new in itself considered, the Bourdon spring being of such a description; but the eXpansion of such a spring is not in a straight line, as is the case with my double-reverse C- springs, forming a continuous tube.

Having thus fully described my invention, what I claim, and desire to secure by 'Letters Patent, is-

l. The herein-described expansion device, consisting oi' a substantially flattened tube bent or formed into a series oi' reverse C curves or springs- 1L c., arcs comprehending more than semicircleswhcreby longitudinal expansion or lengthening of said series forming the tube may be obtained, substantially as set forth.

2. The herein-described expansion device, consisting of a tube closed at its ends and bent oriorined into a series of reverse C curves or springse-z'. c., arcs comprehendingl more than semicircles-said tube containing liquid, whereby by the application of heat longitudinal expansion or lengthen ing of said series forming the tube maybe obtained, substantially described.

JOHN MGCLOSKEY.

Witnesses:

HENRY W. WILLIAMs, J. M. HARTNETT. 

